.controller {
    margin-bottom: 16px;

    button {
        margin-right: 11px;
    }
}
.required::before{
    display: inline-block;
    margin-right: 4px;
    color: #ff4d4f;
    font-size: 14px;
    font-family: SimSun,sans-serif;
    line-height: 1;
    content: "*";
}